Of possible interest to the denizens of this thread, a documentary film
Project Nim is on BBC4 tonight at 9pm.
...a research project that was mounted to determine whether a primate raised in close contact with humans could develop a limited "language" based on American Sign Language. The project was centered on a chimpanzee named Nim Chimpsky.More on the real Project Nim
here (it was a follow up to Project Washoe that some might recall)
It's made by James Marsh, the guy who directed
Man On Wire so will likely be very good.